共查询到17条相似文献,搜索用时 93 毫秒
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天然色素超临界CO2萃取技术研究进展 总被引:3,自引:0,他引:3
本文介绍了超临界萃取技术在食用天然色素研发中的应用现状,对近十年来超临界CO2萃取天然色素的研究报告作了统计,重点介绍了的辣椒红素、胡萝卜素、蕃茄红素、玉米黄色素等超临界CO2萃取技术的研究进展。 相似文献
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超临界CO2技术应用于天然色素萃取的研究进展 总被引:1,自引:0,他引:1
综述了超临界流体技术在天然色素萃取中的应用现状,对超临界CO2萃取不同种类色素的可行性、萃取理论和研究成果等方面进行了总结。探讨了超临界CO2在天然色素萃取方面存在的不足和需要解决的问题。 相似文献
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文章综述了超临界二氧化碳流体萃取技术的特点,并从饮品和酒类、油脂、多不饱和脂肪酸、天然色素和天然香料五个方面对其应用进行了介绍。同时对超临界CO2流体萃取技术前景进行了展望。 相似文献
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本文主要介绍了超临界萃取技术在粮油工业中的应用情况,包括超临界萃取技术在油脂提取、磷脂的分离、不饱和脂肪酸分离、油脂精炼、天然色素提取、天然抗氧化剂提取、甾醇提取等中的应用。 相似文献
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雪峰蜜橘果皮色素的稳定性研究 总被引:3,自引:0,他引:3
利用CO2超临界萃取技术提取雪峰蜜橘果皮色素,用紫外可见分光光度法测定色素在不同条件下最大吸收波长处的吸光度研究色素的稳定性。结果表明,光照、时间、温度、金属离子、氧化剂对雪峰蜜橘果皮色素的稳定性有不同程度的影响,其中长时间的光照对色素稳定性影响明显,氧化剂双氧水的存在对橘皮色素的稳定性有一定影响,但0.5%、1%、2%、3%四个浓度的H2O2对同一样品色素的稳定性影响不大,该类色素有一定的抗氧化作用。同时研究发现,不同萃取条件下得到的果皮色素对光照、时间、温度、金属离子、氧化剂的稳定性不同,说明不同萃取条件下得到的果皮色素组分、含量有差异。 相似文献
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Luxsika Ngamwonglumlert Naphaporn Chiewchan 《Critical reviews in food science and nutrition》2017,57(15):3243-3259
Natural colorants from plant-based materials have gained increasing popularity due to health consciousness of consumers. Among the many steps involved in the production of natural colorants, pigment extraction is one of the most important. Soxhlet extraction, maceration, and hydrodistillation are conventional methods that have been widely used in industry and laboratory for such a purpose. Recently, various non-conventional methods, such as supercritical fluid extraction, pressurized liquid extraction, microwave-assisted extraction, ultrasound-assisted extraction, pulsed-electric field extraction, and enzyme-assisted extraction have emerged as alternatives to conventional methods due to the advantages of the former in terms of smaller solvent consumption, shorter extraction time, and more environment-friendliness. Prior to the extraction step, pretreatment of plant materials to enhance the stability of natural pigments is another important step that must be carefully taken care of. In this paper, a comprehensive review of appropriate pretreatment and extraction methods for chlorophylls, carotenoids, betalains, and anthocyanins, which are major classes of plant pigments, is provided by using pigment stability and extraction yield as assessment criteria. 相似文献
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ABSTRACT: Fractionation of pigments occurs over time during supercritical extraction of oil from natural matrices containing carotenoids. Paprika powder and paprika oleoresin were extracted using CO2 at temperatures of up to 80°C and pressures up to 50 MPa. The pigment concentration in the supercritical phase was monitored with an on-line near infrared visible (NIR-VIS) detector. Concentrations of 90 to 200 g/kg total carotenoids were achieved in oleoresin extracted from starting material containing only 1.2 g/kg total carotenoids. The ratio of ß-carotene + free xanthophylls to total carotenoids in the recovered oleoresin diminished from nearly 50% (w/w) at the beginning down to 10% at the end of the extraction. Increased pressure improved kinetics of carotenoid extraction. 相似文献
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超临界CO_2萃取枸杞色素中β-胡萝卜素研究 总被引:3,自引:0,他引:3
应用超临界CO2 萃取分离技术 ,以枸杞油作为载体 ,从枸杞色素中分离萃取β-胡萝卜素 ,对其理化指标进行了检测分析 ,为从枸杞色素中提取 β-胡萝卜素作为制药原料奠定基础。 相似文献
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采用超临界流体CO2萃取技术萃取紫背天葵红色素,主要探究了萃取时间、萃取温度、萃取压力、夹带剂用量对紫背天葵红色素提取率的影响。结果表明:萃取紫北天葵红色素的最佳工艺条件为夹带剂用量10%、萃取时间80min、萃取温度45℃、萃取压力20MPa。 相似文献
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超临界CO_2萃取可可脂与可可色素的实验研究 总被引:13,自引:0,他引:13
本课题设计和建立了一套超临界萃取扩大试验装置,实现了用超临界CO_2同时萃取可可豆壳(或皮)中可可脂及可可色素的工艺。通过静态与动态试验获得了最佳工艺条件。试验结果表明超临界萃取法还具有工艺简单、操作安全、产品质量好、能耗低和萃取率高等优点。 相似文献